2-11
position fix, however. When POS is pressed the unit will locate a
satellite and update its Almanac before calculating a fix. The unit also
collects an Almanac when POS is pressed and it does not have an
Almanac. (See page 4-10).
lf you need to collect a new Almanac, be aware that it takes about
12-1/2 minutes to collect a complete Almanac once a satellite signal
has been located. (Be sure you have a clear view of the sky.) Since the
receiver is on while the Almanac is being collected, this can be a heavy
drain on your batteries. You might want to connect the unit to extemal
power to collect an Almanac.
lf the unit has lost its memory, it must be reinitialized and a new
Almanac collected. There are several ways to do this. One is to
initialize the unit as described on page 2-5 and collect an Almanac with
AUX 5 (see page 5-8).
You can also press POS. The unit will locate a satellite, collect an
Almanac, and calculate a position fix.
Press POS. The unit tries
to determine which satellite
is scheduled to be over-
head.
Since there is no Almanac
or initial position, the unit
enters Sky Search. The
receiver searches for
satellites in a prescribed
pattern until one is located.
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